CN106756233A - A kind of narrow warm area temperature control Ni Ti marmems and preparation method and application - Google Patents
A kind of narrow warm area temperature control Ni Ti marmems and preparation method and application Download PDFInfo
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- CN106756233A CN106756233A CN201611216598.3A CN201611216598A CN106756233A CN 106756233 A CN106756233 A CN 106756233A CN 201611216598 A CN201611216598 A CN 201611216598A CN 106756233 A CN106756233 A CN 106756233A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
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Abstract
The invention discloses a kind of preparation method of narrow warm area temperature control Ni Ti marmems, comprise the following steps：(1) pulse current annealing heat treatment is carried out to undressed Ni Ti marmems：Pulse current intensity I is 900A~1300A, and annealing time t is 30min~60min；Annealing temperature T is 450 DEG C~900 DEG C；(2) Quenching in liquid nitrogen treatment is carried out to the Ni Ti marmems processed through pulse electrical current heat, obtains narrow warm area temperature control Ni Ti marmems.The invention also discloses narrow warm area temperature control Ni Ti marmems and its application.The present invention can really be effectively facilitated Ni4Ti3The precipitation of precipitated phase, effectively prepares the marmem of narrow warm area temperature control, greatly shortens the time used by heat treatment, the effect with energy-conserving and environment-protective.
Description
Technical field
The present invention relates to Ni-Ti marmems field, more particularly to a kind of narrow warm area temperature control Ni-Ti shape memories are closed
Gold and preparation method and application.
Background technology
Marmem refers to the alloy with certain original shape at low temperature through plastic deformation and is fixed into another
After planting shape, by the class alloy for being heated to more than phase transformation critical-temperature to revert to original shape again.Shape memory is closed
Gold is a kind of functional material for integrating and perceiving and drive.At present, application of the marmem in aerospace field
There are many successfully examples, such as, satellite antenna can make of marmem, by parabola antenna before transmitting
Fold and put into satelloid, after artificial satellite is sent to planned orbit by rocket launching, heating makes the shape memory satellite day of folding
Line launches naturally, recovers its parabolic shape；Marmem also has a wide range of applications in clinical treatment field,
Such as artificial skelecton, the injury of the bone fix pressurizer, dental orthodontic device etc..In addition, marmem is also with our daily life
It is closely bound up, by taking the temperature control spring that marmem is made as an example, the spring to be put in the hot water, the length of spring is stretched immediately
It is long, then be put into cold water, it can restore to the original state immediately.The water temperature of bath tubs can be controlled using shape memory alloy spring,
Water temperature over-high or it is too low when by memory function, the flow of hot water is turned or tunes up down, so as to reach QBT2806-2006 temperature controls
Constant-temperature water faucet highest water temperature must not be higher than 49 DEG C of regulation in water nozzle standard.
During marmem is prepared, the performance needed for obtaining is generally required by certain operation
Heat treatment.Traditional heat treatment method is usually that the annealing of (a few houres even tens hours) for a long time is carried out to alloy
Can achieve the goal, but this heat treatment mode not only takes considerable time, and also energy consumption is greatly, causes larger environment dirty
Dye.Numerous studies show in Ni-Ti marmems, memory phase NiTi2Precipitation of the particle in NiTi alloy substrates can
Cause Ni, Ti atomic ratio to change, and then largely influence the transformation temperature of Ni-Ti marmems, when Ni is former in matrix
When sub- comparision contents are high, the transformation temperature of Ni-Ti marmems is even below less than 0 DEG C, and this will have a strong impact on its shape note
Recall application of the effect in Practical Project.The change of atomic ratio simultaneously may thoroughly change the phase of Ni-Ti marmems
Become type, now, marmem can not carry out a step phase transformation by austenite B2 → B19 ' martensites, and need by R phases
Change carries out transition, and the step phase in version of B2 → R → B19 ' two occurs.And Ni4Ti3Ni, Ti atomic ratio are not only changed in B2 phases,
And its coherence separates out and makes to generate internal stress in matrix, has also delayed the phase velocity of B2 → B19 ', makes SME more
Plus significantly, thus after heat treatment phase transformation occur and be attributed to NiTi2The reduction of phase simultaneously generates Ni4Ti3Precipitated phase, this is conducive to reality
The regulation and control of existing SME and its engineer applied.
The content of the invention
In order to overcome the disadvantages mentioned above and deficiency of prior art, primary and foremost purpose of the invention is to provide a kind of narrow warm area control
The preparation method of warm Ni-Ti marmems, can really be effectively facilitated Ni4Ti3The precipitation of precipitated phase, effectively prepares narrow temperature
The marmem of area's temperature control, and the time used by heat treatment, the effect with energy-conserving and environment-protective can be greatly shortened.
Another object of the present invention is to provide a kind of narrow warm area temperature control Ni-Ti shape memory alloy materials.
It is still another object of the present invention to provide the application of above-mentioned narrow warm area temperature control Ni-Ti marmems.
The purpose of the present invention is achieved through the following technical solutions：
A kind of preparation method of narrow warm area temperature control Ni-Ti marmems, comprises the following steps：
(1) pulse current annealing heat treatment is carried out to undressed Ni-Ti marmems：Pulse current intensity I
It is 900A~1300A, annealing time t is 30min~60min；Annealing temperature T is 450 DEG C~900 DEG C；
(2) Quenching in liquid nitrogen treatment is carried out to the Ni-Ti marmems processed through pulse electrical current heat, obtains narrow warm area control
Warm Ni-Ti marmems.
Described pair of Ni-Ti marmem processed through pulse electrical current heat of step (2) carries out Quenching in liquid nitrogen treatment, specifically
For：
The Ni-Ti marmems processed through pulse electrical current heat are cooled to 200-250 DEG C, sample are taken out, using liquid
Nitrogen quenches.
The composition of the Ni-Ti marmems is to be made up of Ni and Ti, wherein 44~51wt.% of Ti, Ni 56~
49wt.%.
Step (1) the undressed Ni-Ti marmems are prepared using powder metallurgic method, and preparation process is such as
Under：
Ni-Ti alloyed powders are well mixed in mixed powder machine；Well mixed powder is placed in the ball of inert atmosphere protection
High-energy ball milling is carried out in grinding machine, until forming nanocrystalline or non crystalline structure alloy powder；By high-energy ball milling obtain it is nanocrystalline
Or amorphous powdered alloy loads in sintering mold, cylindrical shape memory alloy material is obtained.
Step (1) the undressed Ni-Ti marmems are prepared using casting, and preparation process is as follows：
By the metal blocks of the metal blocks of pure Ni and pure Ti through multiple melt back until composition is uniform, then inhale casting and obtain
Cylindrical shape memory alloy material.
The composition of the Ni-Ti marmems is made up of Ni, Ti and Cu, wherein 44~48wt.% of Ti, and Ni 46~
5~10wt.% of 47wt.%, Cu.
Step (1) the undressed Ni-Ti marmems are prepared using powder metallurgic method, and preparation process is such as
Under：
By pure Ni, pure Ti and pure Cu alloying elements powder are weighed and are well mixed in mixed powder machine in mass ratio；To mix equal
Even powder is placed in carries out high-energy ball milling in the ball mill of inert atmosphere protection, until forming nanocrystalline or non crystalline structure alloy
Powder；The nanocrystalline or amorphous powdered alloy that high-energy ball milling is obtained loads in sintering mold, obtains cylindrical shape memory and closes
Golden material.
Step (1) the undressed Ni-Ti marmems are prepared using casting, and preparation process is as follows：
By pure Ni metal blocks, the metal blocks of pure Ti metal blocks and pure Cu are through multiple melt back until composition is equal
It is even, then inhale casting and obtain cylindrical shape memory alloy material.
The narrow warm area temperature control Ni-Ti that the preparation method of described narrow warm area temperature control Ni-Ti marmems is prepared
Marmem.
Application of the narrow warm area temperature control Ni-Ti marmems in water heating bathroom industry.
Principle of the invention is：
In pulse current heat treatment process, the electron mobility effect of electric current can influence the expansion of atom during solid-state phase changes
Speed is dissipated, so that Pulse Electric Current with High Density can produce important shadow to solid-state phase changes processes such as precipitation, growth, the Amorphous Crystallizations of cenotype
Ring.According to classical crystal nucleation broad theory long, Pulse Electric Current with High Density may advantageously facilitate the forming core of crystal, suppress the length of crystal
Greatly, so as to obtain the tiny composition phase of crystal grain.Further, since the phase transition temperature of memory phase is close to room temperature, therefore Quenching in liquid nitrogen is processed
Be conducive to the tiny memory of the crystal grain for retaining pulse current heat treatment acquisition and other composition phases.Therefore, using pulse electricity
Stream makes annealing treatment to memorial alloy, by Reasonable Regulation And Control heat treatment parameter, helps to prepare narrow warm area temperature control Ni-Ti shapes
Shape memory alloys, so as to realize the extensive use in water heating bathroom industry.
Compared with prior art, the present invention has advantages below and beneficial effect：
(1) method of the present invention carries out low-temperature short-time heat treatment using pulse current to memorial alloy, can really effectively
Promote Ni4Ti3The precipitation of precipitated phase, so that the atomic ratio of Reasonable Regulation And Control memorial alloy matrix, normal temperature is made by controlling phase transition temperature
Lower martensite realizes controllability with the relative amount of austenite, so as to influence the memory effect of material, can effectively prepare narrow warm area
The marmem of temperature control, so as to realize the extensive use in water heating bathroom industry.
(2) side of the invention by using pulse current it is efficiently quick the characteristics of, such that it is able to greatly shorten heat treatment institute
Time, the effect with energy-conserving and environment-protective.
Brief description of the drawings
Fig. 1 is the XRD spectrums of the pulse powder sintered marmem of electrical current heat before processing in embodiment 1.
Fig. 2 is the XRD spectrums of powder sintered marmem after pulse electrical current heat treatment in embodiment 1.
Fig. 3 is the DSC curve of powder sintered marmem after pulse electrical current heat before processing in embodiment 1.
Fig. 4 is composed to cast the XRD of marmem after pulse electrical current heat before processing in embodiment 2.
Fig. 5 is the DSC curve of casting marmem after pulse electrical current heat before processing in embodiment 2.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Embodiment 1
Step (1)：The composition design of narrow warm area temperature control Ni-Ti marmems
Alloying component is designed as Ti by mass percentage44.73Ni55.27, the composition can make alloy meet phase driving force
Reduce, narrow warm area responds the purposes such as phase transformation.
Step (2)：The preparation of narrow warm area temperature control Ni-Ti marmems
Well mixed Ni-Ti alloy powders are placed in the planetary ball mill (QM-2SP20) of argon gas protection carries out high energy
The ball-milling mediums such as ball milling, tank body and grinding ball material are stainless steel, and ball radius are respectively 15,10 and 6mm, their weight ratio
It is 1:3:1.High-energy-milling parameter is as follows：High-purity argon gas (99.999%, 0.5MPa) protection is filled in ball grinder, ratio of grinding media to material is
7:1, rotating speed is 4r/s, and 3g or so powder is taken in the glove box that argon gas is protected every 5h carries out X-ray diffraction (XRD) and differential
The tests such as scanning calorimetric (DSC) analysis, after Ball-milling Time is 60h, analyze through XRD detections and transmission electron microscopy (TEM)
Show the mealy structure of 60h ball millings for amorphous powder, dsc analysis show the glass of 60h ball-milled powders under the heating rate of 30K/min
Glass transition temperature and crystallization temperature are respectively 672 and 745K.
Ni-Ti amorphous powdered alloys obtained in ball milling are fitted into the graphite jig of Φ 20mm, using SPS-825 electric discharges etc.
Ion sintering system carries out powder sintered, and specific sintering process is：Powder is pre-installed with graphite jig before sintering and is carried out pre-
Pressure, is then evacuated to 10-3Pa, pressure remains 50MPa in sintering and cooling procedure, by automatically adjusting sintering process in
Electric current and voltage control heating rate and sintering temperature, are first heated to 323K with 2min, then with the heating rate liter of 30K/min
Height is then heated to less than 880 DEG C 20K, then be warmed up to 900 DEG C of guarantors with 20K/min to 353K with the heating rate of 100K/min
Warm 10min.After sintering is finished, blob-like shapes memorial alloy sample naturally cools to room temperature with stove.
Step (3)：The pulse current heat treatment of narrow warm area temperature control Ni-Ti marmems
The small column that the blob-like shapes memorial alloy sample that step (2) is obtained cuts into 6 × 12mm of Φ is put into mould,
Low-temperature short-time annealing heat-treats are carried out using pulse current Technology for Heating Processing, specific Equipment for Heating Processing and its process conditions are such as
Under：
Equipment for Heating Processing：SPS-825 discharge plasma sintering systems
Heat treatment current type：Pulse current
Heat treatment pulse current intensity I：1250A
Heat-treatment of annealing time t：60min
Thermal anneal temperature T：900℃
Step (4)：The Quenching in liquid nitrogen treatment of narrow warm area temperature control Ni-Ti marmems
200 DEG C are cooled to after the memorial alloy sample after step (3) heat treatment, sample is taken out, using Quenching in liquid nitrogen, obtained final product
To narrow warm area temperature control Ni-Ti marmems.
Fig. 1 is the XRD spectrums of powder sintered marmem after pulse electrical current heat before processing in embodiment 1.As seen from the figure,
Sintered state alloy contains four kinds of phases before pulse current heat treatment：B2 phases, Ni3Ti phases, NiTi2Mutually with B19 ' phases, wherein NiTi2Phase
And B19 ' is compared to relatively more.And after pulse current heat treatment+Quenching in liquid nitrogen is processed, NiTi2Mutually significantly reduce, and occur in that big
The Ni of amount4Ti3Precipitated phase, and a small amount of Ni2Ti cenotypes, the content of B19 ' phases is considerably less.Fig. 2 is pulse current in embodiment 1
The DSC curve of powder sintered marmem before and after heat treatment.It can be seen that sintered state before pulse current heat treatment
Heat release and endothermic peak are occurred without in the whole Range of measuring temp of alloy, i.e., no phase transformation；And by pulse current heat treatment+liquid nitrogen
After Quenching Treatment, obvious heat absorption and exothermic peak are occurred in that, this shows that the treatment of pulse current heat treatment+Quenching in liquid nitrogen sends out alloy
Phase transformation is given birth to, that is, has generated memory effect, its austenite transition temperature has been -14 DEG C, martensitic transformation temperature is -2 DEG C, and phase transformation is stagnant
It is afterwards 12 DEG C.
Embodiment 2
Step (1)：The composition design of narrow warm area temperature control Ni-Ti marmems
Alloying component is designed as Ti by mass percentage44.43Ni46.69Cu8.88, add micro Cu that alloy can be made to meet phase
Become the purposes such as driving force reduction, the response phase transformation of narrow warm area.
Step (2)：The preparation of narrow warm area temperature control Ni-Ti marmems
Ti, Ni and Cu simple substance constituent element from purity better than 99.7wt%, the mass percent designed by step (1) is matched somebody with somebody
Material, using vacuum suction casting technique, through six melt backs, makes homogenization of composition, and obtain the shape memory of a diameter of 6 × 50mm of Φ
Alloy bar.
Step (3)：The pulse current heat treatment of narrow warm area temperature control Ni-Ti marmems
The small column that shape memory alloy bar material obtained in step (2) cuts into 6 × 12mm of Φ is put into mould, is used
Pulse current Technology for Heating Processing carries out low-temperature short-time annealing heat-treats, and specific Equipment for Heating Processing and its process conditions are as follows：
Equipment for Heating Processing：Self-control pulsed current annealing device
Heat treatment current type：Pulse current
Heat treatment pulse current intensity I：900A
Heat-treatment of annealing time t：60min
Thermal anneal temperature T：450 DEG C or 550 DEG C
Step (4)：The Quenching in liquid nitrogen treatment of narrow warm area temperature control Ni-Ti marmems
Memorial alloy sample after to be heated is cooled to 200 DEG C, takes out sample, and Quenching in liquid nitrogen obtains narrow warm area control
Warm Ni-Ti marmems, its water temperature that can be used for precise control bathroom water nozzle.
Fig. 4 is composed to cast the XRD of marmem after pulse electrical current heat before processing in embodiment 2.As seen from the figure, pulse
A small amount of CuTi phases have also been separated out in addition to B2 phases and B19 ' phases in alloy after the treatment of electric current heat treatment+Quenching in liquid nitrogen, and seldom
There is richness Ti phases and richness Ni phases.Fig. 4 is the DSC curve of casting marmem after pulse electrical current heat before processing in embodiment 2.
It can be seen that in temperature-rise period, the single weaker and narrower exothermic peak of alloy displaying of non-pulse current heat treatment, and
Alloy exothermic peak changes little after 450 DEG C of pulse current heat treatment+Quenching in liquid nitrogen treatment, but after being heat-treated 1h at 550 DEG C,
A very strong exothermic peak is occurred in that, and its phase in version started temperature and final temperature are above 450 DEG C of samples of heat treatment 1h；
Simultaneously during cooling, nonheat-treated alloy presents multistep martensite transfor mation, is B2-R-B19 ', and after being heat-treated
Multistep martensite transfor mation disappears, and becomes a step martensite transfor mation, is B2-B19 ' once phase-changes.Meanwhile, after 550 DEG C of heat treatments
The martensitic transformation temperature of alloy is higher than 450 DEG C of heat treatment samples, is attributed to the precipitation of less CuTi phases.In addition, can by Fig. 4
Know, 550 DEG C of marmem sample phase transition temperatures of heat treatment are located between 40~50 DEG C, meet QBT2806-2006 temperature controls
Constant-temperature water faucet highest water temperature must not be higher than 49 DEG C of regulation in water nozzle standard.
Embodiment 3
Step (1)：The composition design of narrow warm area temperature control Ni-Ti marmems
Alloying component is designed as Ti by mass percentage51Ni49, the composition can make alloy meet phase driving force reduce,
The purposes such as narrow warm area response phase transformation.
Step (2)：The preparation of narrow warm area temperature control Ni-Ti marmems
By the metal blocks of pure Ni (99.7%) and pure Ti (99.9%) through multiple melt back up to composition is uniform, then inhale
Casting obtains cylindrical shape memory alloy material.
Step (3)：The pulse current heat treatment of narrow warm area temperature control Ni-Ti marmems
The small column that the blob-like shapes memorial alloy sample that step (2) is obtained cuts into 6 × 12mm of Φ is put into mould,
Low-temperature short-time annealing heat-treats are carried out using pulse current Technology for Heating Processing, specific Equipment for Heating Processing and its process conditions are such as
Under：
Equipment for Heating Processing：SPS-825 discharge plasma sintering systems
Heat treatment current type：Pulse current
Heat treatment pulse current intensity I：1250A
Heat-treatment of annealing time t：60min
Thermal anneal temperature T：900℃
Step (4)：The Quenching in liquid nitrogen treatment of narrow warm area temperature control Ni-Ti marmems
250 DEG C are cooled to after the memorial alloy sample after step (3) heat treatment, sample is taken out, using Quenching in liquid nitrogen, obtained final product
To narrow warm area temperature control Ni-Ti marmems.
The test result of narrow warm area temperature control Ni-Ti marmems manufactured in the present embodiment is similar to Example 1, herein
Repeat no more.
Embodiment 4
The present embodiment except narrow warm area temperature control Ni-Ti marmems preparation using powder metallurgic method prepare in addition to, remaining
Feature is same with embodiment 1.
The preparation process of the narrow warm area temperature control Ni-Ti marmems of the present embodiment is as follows：
By pure Ni (99.95%), pure Ti (99.97%) and pure Cu (99.95%) alloying element powder are weighed simultaneously in mass ratio
It is well mixed in mixed powder machine；Well mixed powder is placed in carries out high-energy ball milling in the ball mill of inert atmosphere protection, directly
To forming nanocrystalline or non crystalline structure alloy powder；The nanocrystalline or amorphous powdered alloy that high-energy ball milling is obtained loads sintering
In mould, cylindrical shape memory alloy material is obtained.
The test result of narrow warm area temperature control Ni-Ti marmems manufactured in the present embodiment is similar to Example 2, herein
Repeat no more.
Above-described embodiment is the present invention preferably implementation method, but embodiments of the present invention are not by the embodiment
Limitation, it is other it is any without departing from Spirit Essence of the invention and the change, modification, replacement made under principle, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. a kind of preparation method of narrow warm area temperature control Ni-Ti marmems, it is characterised in that comprise the following steps：
(1) pulse current annealing heat treatment is carried out to undressed Ni-Ti marmems：Pulse current intensity I is
900A~1300A, annealing time t are 30min~60min；Annealing temperature T is 450 DEG C~900 DEG C；
(2) Quenching in liquid nitrogen treatment is carried out to the Ni-Ti marmems processed through pulse electrical current heat, obtains narrow warm area temperature control
Ni-Ti marmems.
2. the preparation method of narrow warm area temperature control Ni-Ti marmems according to claim 1, it is characterised in that step
Suddenly (2) described pair of Ni-Ti marmem processed through pulse electrical current heat carries out Quenching in liquid nitrogen treatment, specially：
The Ni-Ti marmems processed through pulse electrical current heat are cooled to 200-250 DEG C, sample is taken out, are quenched using liquid nitrogen
Fire.
3. the preparation method of narrow warm area temperature control Ni-Ti marmems according to claim 1, it is characterised in that institute
The composition for stating Ni-Ti marmems is to be made up of Ni and Ti, wherein 44~51wt.% of Ti, 56~49wt.% of Ni.
4. the preparation method of narrow warm area temperature control Ni-Ti marmems according to claim 3, it is characterised in that step
Suddenly (1) described undressed Ni-Ti marmems are prepared using powder metallurgic method, and preparation process is as follows：
Ni-Ti alloyed powders are well mixed in mixed powder machine；Well mixed powder is placed in the ball mill of inert atmosphere protection
In carry out high-energy ball milling, until forming nanocrystalline or non crystalline structure alloy powder；By high-energy ball milling obtain it is nanocrystalline or non-
Peritectic alloy powder loads in sintering mold, obtains cylindrical shape memory alloy material.
5. the preparation method of narrow warm area temperature control Ni-Ti marmems according to claim 3, it is characterised in that step
Suddenly (1) described undressed Ni-Ti marmems are prepared using casting, and preparation process is as follows：
By the metal blocks of the metal blocks of pure Ni and pure Ti through multiple melt back until composition is uniform, then inhale casting and obtain cylinder
Shape shape memory alloy material.
6. the preparation method of narrow warm area temperature control Ni-Ti marmems according to claim 1, it is characterised in that institute
The composition for stating Ni-Ti marmems is made up of Ni, Ti and Cu, wherein 44~48wt.% of Ti, Ni 46~47wt.%, Cu
5~10wt.%.
7. the preparation method of narrow warm area temperature control Ni-Ti marmems according to claim 6, it is characterised in that step
Suddenly (1) described undressed Ni-Ti marmems are prepared using powder metallurgic method, and preparation process is as follows：
By pure Ni, pure Ti and pure Cu alloying elements powder are weighed and are well mixed in mixed powder machine in mass ratio；By what is be well mixed
Powder is placed in carries out high-energy ball milling in the ball mill of inert atmosphere protection, until forming nanocrystalline or non crystalline structure alloyed powder
End；The nanocrystalline or amorphous powdered alloy that high-energy ball milling is obtained loads in sintering mold, obtains cylindrical shape memorial alloy
Material.
8. the preparation method of narrow warm area temperature control Ni-Ti marmems according to claim 6, it is characterised in that step
Suddenly (1) described undressed Ni-Ti marmems are prepared using casting, and preparation process is as follows：
By pure Ni metal blocks, the metal blocks of pure Ti metal blocks and pure Cu through multiple melt back until composition is uniform, then
Inhale casting and obtain cylindrical shape memory alloy material.
9. the preparation method of the narrow warm area temperature control Ni-Ti marmems described in any one of claim 1~8 is prepared
Narrow warm area temperature control Ni-Ti marmems.
10. application of the narrow warm area temperature control Ni-Ti marmems in water heating bathroom industry described in claim 9.
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| CN110055481A (en) * | 2019-06-04 | 2019-07-26 | 武汉轻工大学 | A kind of preparation method of nanometer crystalline Ni Ti latten |
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| CN117257365A (en) * | 2023-11-21 | 2023-12-22 | 山东瑞安泰医疗技术有限公司 | Nickel-titanium-copper plugging device with low nickel content, and preparation method and application thereof |
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| CN108262367A (en) * | 2018-01-22 | 2018-07-10 | 哈尔滨工业大学 | A kind of preparation method with the NiTi alloy micrometer fibers for playing hot property |
| CN108262367B (en) * | 2018-01-22 | 2019-05-14 | 哈尔滨工业大学 | A kind of preparation method with the NiTi alloy micrometer fibers for playing hot property |
| CN109822095A (en) * | 2019-04-04 | 2019-05-31 | 哈尔滨工程大学 | Shape memory alloy particles enhance Cu-base composites and preparation method |
| CN110055481A (en) * | 2019-06-04 | 2019-07-26 | 武汉轻工大学 | A kind of preparation method of nanometer crystalline Ni Ti latten |
| CN114669751A (en) * | 2022-04-14 | 2022-06-28 | 中南大学 | Preparation method of crack-free nickel-titanium-copper alloy for additive manufacturing |
| CN114990411A (en) * | 2022-04-14 | 2022-09-02 | 中南大学 | High-copper-content 3D printing nickel-titanium-copper alloy and preparation method thereof |
| CN114669751B (en) * | 2022-04-14 | 2023-02-28 | 中南大学 | Preparation method of crack-free nickel-titanium-copper alloy for additive manufacturing |
| CN114875294A (en) * | 2022-06-07 | 2022-08-09 | 上海工程技术大学 | Titanium-nickel-based alloy material and preparation method and application thereof |
| CN117257365A (en) * | 2023-11-21 | 2023-12-22 | 山东瑞安泰医疗技术有限公司 | Nickel-titanium-copper plugging device with low nickel content, and preparation method and application thereof |
| CN117257365B (en) * | 2023-11-21 | 2024-02-02 | 山东瑞安泰医疗技术有限公司 | Nickel-titanium-copper plugging device with low nickel content, and preparation method and application thereof |
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